<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8"/>
        <title>localStorage</title>
    </head>
<body>
    <h2>localStorage</h2>
    <button onclick="saveData()">点我保存一个数据</button>
    <button onclick="readData()">点我读取一个数据</button>
    <button onclick="delData()">点我删除一个数据</button>
    <script>
        let p = {"name":"张三","age":"18"}
        function saveData() {
            localStorage.setItem("msg","hello!!!");
            localStorage.setItem("msg2",666);
            localStorage.setItem("person",JSON.stringify(p));
        }
        function readData() {
            console.log(localStorage.getItem('msg'))
            console.log(localStorage.getItem('msg2'))
            let p = localStorage.getItem('person');
            console.log(JSON.parse(p))
        }
        function delData(params) {
            localStorage.removeItem('person')
            localStorage.clear()
        }
    </script>
</body>
</html> 